Author
K. Murali
Other affiliations: Swansea University, Institute of High Performance Computing Singapore
Bio: K. Murali is an academic researcher from Indian Institute of Technology Madras. The author has contributed to research in topics: Breakwater & Finite element method. The author has an hindex of 14, co-authored 73 publications receiving 700 citations. Previous affiliations of K. Murali include Swansea University & Institute of High Performance Computing Singapore.
Papers published on a yearly basis
Papers
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TL;DR: In this paper , a finite element model for depth integrated form of Boussinesq equations is presented, where the equations are solved on an unstructured triangular mesh using standard Galerkin method with mixed interpolation scheme.
2 citations
TL;DR: In this paper, the authors describe the changes near a coastal structure and around the confluence of a river and the sea as the most important areas for field investigation and site data collection.
Abstract: Shorelines experience significant changes near a coastal structure and around the confluence of a river and the sea. Field investigation and site data collection by the latest technologies for the ...
2 citations
2 citations
01 Jan 2009
TL;DR: In this article, an experimental program designed and constructed in a wave flume system to study the oil-mineral aggregation and it's effectiveness in reducing the oil toxicity, in a controlled mixing energy conditions (non-breaking and breaking waves).
Abstract: The oil-mineral aggregate formation tests are commonly conducted in batch-scale testing apparatus in order to find the effectiveness in reducing the oil concentration in water column. However, for the assessment of effectiveness of mineral as dispersant under real sea state conditions, test protocols are required to have hydrodynamic conditions closer to the natural sea state environment, including transport and dilution effects. To achieve this goal, experimental program designed and constructed in a wave flume system to study the oil-mineral aggregation and it’s effectiveness in reducing the oil toxicity, in a controlled mixing energy conditions (non-breaking and breaking waves). Quantification of oil mineral aggregation effectiveness was based on observed changes in dispersed oil concentrations and distribution of oil in the beach sediments. The study results quantitatively demonstrated that total dispersed oil concentration in the water column were strongly dependent on the presence of mineral aggregates and the influence of breaking waves. The effectiveness of application of minerals, as a function of sea state was studied and would be useful in drafting of future operational guidelines for mineral dispersant use at sea.Copyright © 2009 by ASME
2 citations
TL;DR: A video processing pipeline that takes retinoscopic videos as input and estimates the net refractive error based on the proposed extension of the retinoscopy mathematical model is developed, which alleviates the need for a lens kit and can be performed by an untrained examiner.
Abstract: Refractive error is the most common eye disorder and is the key cause behind correctable visual impairment, responsible for nearly 80% of the visual impairment in the US. Refractive error can be diagnosed using multiple methods, including subjective refraction, retinoscopy, and autorefractors. Although subjective refraction is the gold standard, it requires cooperation from the patient and hence is not suitable for infants, young children, and developmentally delayed adults. Retinoscopy is an objective refraction method that does not require any input from the patient. However, retinoscopy requires a lens kit and a trained examiner, which limits its use for mass screening. In this work, we automate retinoscopy by attaching a smartphone to a retinoscope and recording retinoscopic videos with the patient wearing a custom pair of paper frames. We develop a video processing pipeline that takes retinoscopic videos as input and estimates the net refractive error based on our proposed extension of the retinoscopy mathematical model. Our system alleviates the need for a lens kit and can be performed by an untrained examiner. In a clinical trial with 185 eyes, we achieved a sensitivity of 91.0% and specificity of 74.0% on refractive error diagnosis. Moreover, the mean absolute error of our approach was 0.75±0.67D on net refractive error estimation compared to subjective refraction measurements. Our results indicate that our approach has the potential to be used as a retinoscopy-based refractive error screening tool in real-world medical settings.
2 citations
Cited by
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Lloyd's Register1, National University of Singapore2, Istanbul University3, SINTEF4, Delft University of Technology5, Osaka University6, Technical University of Denmark7, University of Zagreb8, Technical University of Lisbon9, National Technical University of Athens10, Germanischer Lloyd11, University of Strathclyde12
TL;DR: In this paper, the authors present a review of the recent advances in the assessment of loads for ships and offshore structures with the aim to draw the overall technological landscape available for further understanding, validation and implementation by the academic and industrial communities.
226 citations
TL;DR: In this paper, the authors reviewed the earlier reported case histories of sulphate attack in lime and cement stabilized clays and a list of precautionary measures to be adopted for controlling the ettringite formation have been suggested.
203 citations
TL;DR: In this paper, a galloping-based piezoelectric energy harvester (GPEH) with triangular cross-section bluff bodies with different vertex angles is investigated, and the aerodynamic characteristics are determined by Computational Fluid Dynamics (CFD) and verified by experimental data.
194 citations
TL;DR: In this article, a team surveyed the effects of the December 2004 Indian Ocean tsunami on the southern coast of Oman and found that runup and inundation were obtained at 41 sites, extending over a total of 750 km of shoreline.
Abstract: In August 2005, a team surveyed the effects of the December 2004 Indian Ocean tsunami on the southern coast of Oman. Runup and inundation were obtained at 41 sites, extending over a total of 750 km of shoreline. Measured runup ranged from 3.25 m in the vicinity of Salalah to a negligible value at one location on Masirah Island. In general, the largest values were found in the western part of the surveyed area. Significant incidents were documented in the port of Salalah, where a 285-m-long vessel broke its moorings and drifted inside and outside the port, and another ship struck the breakwater while attempting to enter the harbor. The general hazard to Oman from tsunamis may be greatest from the neighboring Makran subduction zone in western Pakistan.
183 citations